var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
let baseURL = '/hunyunback';
var validator = require('./utils/Validator');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

app.all('*', function (req, res, next) {
  res.header("Access-Control-Allow-Credentials", true)
  res.header('Access-Control-Allow-Origin', '*')
  res.header('Access-Control-Allow-Methods', 'GET, PUT, POST, OPTIONS')
  res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization, Content-Length, X-Requested-With, token, data')
  if (req.method == 'OPTIONS') {
    res.sendStatus(200)
  } else {
    next()
  }
});

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());

// 导入全局拦截器
app.use(validator.Validator);

app.use(`${baseURL}/sys`, indexRouter);
app.use(`${baseURL}/users`, usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
